Franklin (Benjamin), his early life 10, 11 ———— his first experiments in electricity 12–19 ———— correspondence thereon with Peter Collinson 12, 13, 17 ———— on the identity of lightning and electricity 16 ———— ‘New Experiments and Observations in Electricity’ 18 ———— his ‘kite’ experiment 22 ———— honours conferred on him 24 ———— his first lightning-conductor 25 ———— his experiments therewith 25 ———— on positive and negative electricity 26 ———— his lightning-conductor on West’s house 30 ———— his letter to Professor Winthrop defending lightning-conductors 36 ———— his troubles in making his first lightning-conductor 101 ———— on the earth connection of lightning-conductors 199 French technical terms for lightning-conductors 102 Fuller (Thomas) on fires caused by lightning 176 G Galvani’s experiments on animal electricity 70 Galvanometer, the invention of the 58 ———— a new form of 60 Geneva, the progress of lightning-conductors in 43 Genoa, St. Mary’s Church struck by lightning 201 ———— Professor Landriani thereon 202 ‘Gentleman’s Magazine’ _quoted_ 40 George III., his opinions on lightning-conductors 41, 42 German technical terms for lightning-conductors 102 ———— theories on the earth connection 212, 214 Germany, the progress of lightning-conductors in 43 Gilbert (Dr. William), his electrical discoveries 2 Gratz, Austria, buildings struck by lightning at 68 Gray (Stephen), his researches on electricity 3 Guericke (Otto von) his electrical machine 2 H Harris (Sir William Snow) his efforts for the protection of ships from the effects of lightning 85 ———— and Sir George Cockburn 89 ———— his system for protecting ships 90 ———— his ‘Instructions for powder-magazines’ 93 ———— his system for the protection of Westminster Palace 98, 118 Hauksbee (Francis), his researches on electricity 2 Height of lightning-clouds 67 Hemmer (Rev. Dr.), his theories on the earth connection 200